Graphs

Question

I want a program with good explanation on graphs . <Redacted. No personal contact information please>

Answer 1

https://stackoverflow.com/questions/1737627/java-how-to-represent-graphs

Answer 2

There are many many algorithms on graphs. Here are a few that you can search. Dfs, bfs, spfa, Dijkstra, Floyd, bellman Ford. There are Prim and Krystal for msts.
To represent graphs. Just represent the node and it's adjacent. Or just use a list of edges.
solo learn uses a graph to maintain followers. Person A follows person B which means that A is connected to B